Emerson Micro Motion Manual de usuario
Installation Manual
MMI-20020984, Rev AC
March 2018
Micro Motion® Specific Gravity Meters (SGM)
Gas specific gravity measurement
Safety and approval information
This Micro Motion product complies with all applicable European directives when properly installed in accordance with the
instructions in this manual. Refer to the EU declaration of conformity for directives that apply to this product. The EU declaration of
conformity, with all applicable European directives, and the complete ATEX Installation Drawings and Instructions are available on
the internet at www.emerson.com or through your local Micro Motion support center.
Information affixed to equipment that complies with the Pressure Equipment Directive, can be found on the internet at
www.emerson.com.
For hazardous installations in Europe, refer to standard EN 60079-14 if national standards do not apply.
Other information
Full product specifications can be found in the product data sheet. Troubleshooting information can be found in the configuration
manual. Product data sheets and manuals are available from the Micro Motion web site at www.emerson.com.
Return policy
Follow Micro Motion procedures when returning equipment. These procedures ensure legal compliance with government
transportation agencies and help provide a safe working environment for Micro Motion employees. Micro Motion will not accept
your returned equipment if you fail to follow Micro Motion procedures.
Return procedures and forms are available on our web support site at www.emerson.com, or by phoning the Micro Motion Customer
Service department.
Emerson Flow customer service
Email:
•Worldwide: [email protected]
•Asia-Pacific: [email protected]
Telephone:
North and South America Europe and Middle East Asia Pacific
United States 800-522-6277 U.K. 0870 240 1978 Australia 800 158 727
Canada +1 303-527-5200 The Netherlands +31 (0) 704 136 666 New Zealand 099 128 804
Mexico +41 (0) 41 7686 111 France 0800 917 901 India 800 440 1468
Argentina +54 11 4837 7000 Germany 0800 182 5347 Pakistan 888 550 2682
Brazil +55 15 3413 8000 Italy 8008 77334 China +86 21 2892 9000
Central & Eastern +41 (0) 41 7686 111 Japan +81 3 5769 6803
Russia/CIS +7 495 981 9811 South Korea +82 2 3438 4600
Egypt 0800 000 0015 Singapore +65 6 777 8211
Oman 800 70101 Thailand 001 800 441 6426
Qatar 431 0044 Malaysia 800 814 008
Kuwait 663 299 01
South Africa 800 991 390
Saudi Arabia 800 844 9564
UAE 800 0444 0684
Contents
Chapter 1 Planning ...........................................................................................................................1
1.1 Installation and commissioning overview ....................................................................................... 1
1.2 Installation checklist .......................................................................................................................1
1.3 Best practices ................................................................................................................................. 2
1.4 Recommended installation for specific gravity applications ........................................................... 3
1.5 Power requirements .......................................................................................................................4
Chapter 2 Mounting .........................................................................................................................7
2.1 Mount the meter enclosure to a wall .............................................................................................. 7
2.2 Connect the gas bypass lines ..........................................................................................................9
2.3 Rotate the display on the transmitter (optional) ...........................................................................10
Chapter 3 Wiring ........................................................................................................................... 12
3.1 Terminals and wiring requirements .............................................................................................. 12
3.2 Intrinsically safe output wiring ......................................................................................................13
3.3 Heater wiring ............................................................................................................................... 21
Chapter 4 Grounding ......................................................................................................................23
Contents
Installation Manual i
Contents
ii Micro Motion Specific Gravity Meters
1 Planning
Topics covered in this chapter:
•Installation and commissioning overview
•Installation checklist
•Best practices
•Recommended installation for specific gravity applications
•Power requirements
1.1 Installation and commissioning overview
Following is an overview of the tasks to install and commission the Specific Gravity Meter
(SGM). These tasks must be completed before configuring and using the meter.
As part of the SGM commissioning process, you are required to perform an onsite
calibration of the meter. Onsite meter calibration requires calibration gases and additional
hardware to calibrate the meter. See the configuration and use manual for more
information on planning the SGM commissioning. The configuration and use manual
provides guidance on selecting the calibration gases, as well as instruction on performing
an onsite calibration.
Process Reference
Confirm you have all parts necessary and meet the basic installa-
tion requirements.
See Section 1.2
Consider the installation best practices for the meter. See Section 1.3
Mount the meter. See Section 2.1
Connect the gas bypass lines to the meter. See Section 2.2
Wire the meter according to the recommended practices for
your process environment and required approvals.
See Chapter 3
Select the control pressure for the meter. See Micro Motion Specific Gravi‐
ty Meters (SGM): Configuration
and Use Manual
Purge cycle the meter.
Calibrate the meter.
1.2 Installation checklist
□Verify the contents of the product shipment to confirm that you have all parts and
information necessary for the installation.
Planning
Installation Manual 1
Part Quantity
Micro Motion® Specific Gravity Meter (SGM) 1
Labeled enclosure (if applicable), which includes:
-Enclosure mounting feet
-Instructions for attaching the mounting feet
1
Accessories kit:
-M20 to 1/2-inch NPT adapter (if applicable)
-1/2-inch NPT blanking plug
-2.5 mm hex key
1
Calibration certificate 1
Safety instructions booklets 2
Micro Motion Product Documentation DVD 1
□Make sure that all electrical safety requirements are met for the environment in
which the meter will be installed.
□Make sure that the local ambient and process temperatures and process pressure
are within the limits of the meter.
□Make sure that the hazardous area specified on the approval tag is suitable for the
environment in which the meter will be installed.
□If installing the meter in a hazardous area, confirm that you have the required safety
barriers or galvanic isolators for your installation.
□Make sure that you will have adequate access to the meter for verification and
maintenance.
□Make sure that the process gas meets the recommended characteristics regarding
composition, temperature, and pressure for your installation.
□Verify that you have all equipment necessary for your installation. Depending on
your application, you may be required to install additional parts for optimal
performance of the meter.
□Follow recommended best practices for installing the SGM.
1.3 Best practices
The following information can help you get the most from your meter.
•Handle the meter with care. Follow local practices for lifting or moving the meter.
•Ensure that the process gas is clean and dry.
•Do not use gases incompatible with the materials of construction. To prevent
corrosion of the sensing element, the process gas should be compatible with
Ni-Span-C.
•Do not expose the meter to excessive vibration (greater than 0.5 g continuously).
Vibration levels in excess of 0.5 g can affect the meter accuracy.
•Do not operate the meter above its rated pressure or process temperature.
Planning
2Micro Motion Specific Gravity Meters
•Install an external coalescing filter in the sample gas inlet pipework to minimize
condensate and dust contamination.
•Verify that the filters in your system are not causing any excessive flow restrictions.
•Installing the meter in a weather-proof enclosure thermally insulates the meter to
maintain temperature equilibrium between the sample and pipeline gases.
•Ensure good ventilation around the meter and/or enclosure to prevent gas build-up
in the unlikely event of a leak.
•Ensure meter is not transported when it contains hazardous substances, including
fluids that may have leaked into and are still contained within the case.
1.4 Recommended installation for specific gravity
applications
To ensure optimum performance of the meter, Micro Motion recommends that you install
the meter inside an enclosure that is mounted to a wall. The following diagram illustrates
the recommended installation of the SGM.
Planning
Installation Manual 3
Typical wall-mounted installation of the SGM in an enclosureFigure 1-1:
I
G
E
JB
F
H
A
D
C
M
K
L
O
N
SGM
A. Input valve
B. Calibration valve
C. Exit valve
D. Isolation valve
E. Purging valve
F. Pipeline
G. Coalescing filter
H. Pressure regulator
I. Flowmeter
J. Calibration gas inputs
K. Pressure relief connection
L. Gas outlet connection
M. Gas inlet connection
N. Vent
O. Electrical cable conduit
P. Wall‐mounted enclosure with SGM
Note
•To ensure that you do not operate the meter above its rated pressure, you must install a pressure regulator between the
gas line and the meter.
•For ATEX installations, you are required to install a coalescing filter and element (as supplied).
1.5 Power requirements
Following are the DC power requirements to operate the meter:
•24 VDC, 0.45 W maximum
•Minimum 22.8 VDC with 1000 m (3280 ft) of 0.20 mm2 (18 AWG) power-supply
cable
Planning
4Micro Motion Specific Gravity Meters
•At startup, power source must provide a minimum of 0.5 A of short-term current at
a minimum of 19.6 V at the power-input terminals.
Power cable recommendations
Minimum wire gauge (AWG per feet)Figure 1-2:
3 0 0 6 0 0 9 0 0 12 0 0 1 50 0 18 0 0 21 0 0 24 0 0 27 0 0 3 00 0
22 . 8 V
24 V
14
15
16
17
18
19
20
21
2 2
23
24
25
26
A
B
A. AWG
B. Distance of installation
Planning
Installation Manual 5
Minimum wire area (mm2 per meter)Figure 1-3:
A. Minimum wire area (mm2)
B. Distance of installation
Planning
6Micro Motion Specific Gravity Meters
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